Here are some further resource material for you to get started with HTTP/2:
http2 explained: Background, the protocol, the implementations and the future, by Daniel Stenberg.
The spec doc Hypertext Transfer Protocol version 2 by HTTPbis Working Group
Innovating with HTTP 2.0 Server Push by Ilya Grigorik
Link prefetching FAQ from Mozilla Developer Network
HTTP/2 Wiki page: Implementations – showing current implementation of HTTP/2 in software.
The Chromium Projects, SPDY: Server Push and Server Hints
Tim Nash have a post on how you can set up nghttp2 in front of Nginx, so you can start experimenting with HTTP/2.